The Benefits of Permeable Pavement

Permeable pavements, let every raindrop to infiltrate

Managing stormwater in urban areas, roads, car parks, logistic areas, truck parks, private car garage roads, construction sites and service stations raises many challenges for engineers, landscape architects, and planners. As urbanization grow, the number of impervious surfaces—those that do not allow water to infiltrate into the ground—increases. Asphalt roads, concrete sidewalks, parking lots, building roofs, and areas of highly compacted soils are widely built. The stormwater runoff produced by these impermeable surfaces is often very polluted and can have negative effects on nearby surface waters. When waters do not infiltrate the soil, the stormwater management system, consisting of stormwater structures and pipes, quickly directs them to streams, rivers, and lakes. Such increases in stormwater runoff can have critical effects on lands receiving streams resulting in flooding, peak flows, groundwater or stream baseflow reductions and pollution.

One management solution is to reduce runoff by increasing infiltration through the use of permeable or pervious pavement. Water percolates through the pavement and infiltrates the soils locally, reducing runoff.

Permeable pavement offers environmental benefits. Increasing the amount of infiltrated stormwater provides stability from erosion control therefore helping to  maintain the habitat necessary for aquatic life. As permeable pavement eliminates standing water, it offers reduced hydroplaning on roadways, and resistance to freeze/thaw conditions. Evaporation from beneath the permeable pavement can produce a cooler surface helping reduce the heat island effect often experienced in urban settings. Permeable pavement can be mineral or green allowing development of grass or urban trees.

Direct infiltration through permeable pavements contributed to reduce, but not to eliminate the amount of polluants into water such as hydrocarbons or heavy metals found in stormwater runoff. It is key to infiltrate clean stormwater directly.

The added value of aquatextiles 

Why use the TenCate GeoClean® aquatextile in permeable pavements?

  • Solution able to clean stormwater directly below the permeable pavement
  • Efficient even with low polluants concentration into water
  • Same performance at all rainfall intensities
  • Protects the whole permeable area against pollution
  • Oil Barrier in case of accidental oil spill
  • Easy to install over large areas

Installing the TenCate GeoClean® aquatextile

Installing the TenCate GeoClean® aquatextile in permeable structures secures a direct infiltration of clean water, no matter the type of soil either permeable or low permeable soil and no matter the type of pavement either mineral or green

Case study

Permeable paving on P&R car park

The Netherlands, Meestad

The creation of a new P&R car park of 10,000 m².